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pkg/autoupdate: decompose the update logic

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Decompose the update logic into smaller steps (update check, update,
rollback, etc.) and move the implementation into the `task` API.
This allows to transition a task from state to state, independent of its
underlying auto-update policy.

Supporting more than one container per unit is now really close.

[NO NEW TESTS NEEDED] - should not change behavior.

Signed-off-by: Valentin Rothberg <vrothberg@redhat.com>
This commit is contained in:
Valentin Rothberg
2022-08-03 16:12:48 +02:00
parent 0df51bb6bc
commit 43cca5d97a
1 changed files with 9 additions and 12 deletions
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21
pkg/autoupdate/autoupdate.go
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@ -182,6 +182,10 @@ func AutoUpdate(ctx context.Context, runtime *libpod.Runtime, options entities.A
for _, task := range tasks {
err := func() error {
// Transition from state to state. Will be
// split into multiple loops in the future to
// support more than one container/task per
// unit.
updateAvailable, err := task.updateAvailable(ctx)
if err != nil {
task.status = statusFailed
@ -298,8 +302,11 @@ func (t *task) registryUpdate(ctx context.Context) error {
return nil
}
if err := pullImage(ctx, t.auto.runtime, t.rawImageName, t.authfile); err != nil {
return fmt.Errorf("registry auto-updating container %q: image update for %q failed: %w", t.container.ID(), t.rawImageName, err)
pullOptions := &libimage.PullOptions{}
pullOptions.AuthFilePath = t.authfile
pullOptions.Writer = os.Stderr
if _, err := t.auto.runtime.LibimageRuntime().Pull(ctx, t.rawImageName, config.PullPolicyAlways, pullOptions); err != nil {
return err
}
t.auto.updatedRawImages[t.rawImageName] = true
@ -448,13 +455,3 @@ func (u *updater) assembleImageMap(ctx context.Context) (map[string]*libimage.Im
return imageMap, nil
}
// pullImage pulls the specified image.
func pullImage(ctx context.Context, runtime *libpod.Runtime, name, authfile string) error {
pullOptions := &libimage.PullOptions{}
pullOptions.AuthFilePath = authfile
pullOptions.Writer = os.Stderr
_, err := runtime.LibimageRuntime().Pull(ctx, name, config.PullPolicyAlways, pullOptions)
return err
}